chrome/browser/chromeos/extensions/wallpaper_api.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/extensions/wallpaper_api.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/path_service.h"
   9 #include "base/threading/worker_pool.h"
  10 #include "chrome/browser/chromeos/login/user.h"
  11 #include "chrome/browser/chromeos/login/user_manager.h"
  12 #include "chrome/browser/chromeos/login/wallpaper_manager.h"
  13 #include "chrome/common/chrome_paths.h"
  14
  15 using base::BinaryValue;
  16 using content::BrowserThread;
  17
  18 WallpaperSetWallpaperFunction::WallpaperSetWallpaperFunction() {
  19 }
  20
  21 WallpaperSetWallpaperFunction::~WallpaperSetWallpaperFunction() {
  22 }
  23
  24 bool WallpaperSetWallpaperFunction::RunImpl() {
  25   DictionaryValue* details = NULL;
  26   EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &details));
  27
  28   BinaryValue* input = NULL;
  29   details->GetBinary("wallpaperData", &input);
  30
  31   std::string layout_string;
  32   details->GetString("layout", &layout_string);
  33   EXTENSION_FUNCTION_VALIDATE(!layout_string.empty());
  34   layout_ = wallpaper_api_util::GetLayoutEnum(layout_string);
  35
  36   details->GetBoolean("thumbnail", &generate_thumbnail_);
  37   details->GetString("name", &file_name_);
  38
  39   EXTENSION_FUNCTION_VALIDATE(!file_name_.empty());
  40
  41   // Gets email address while at UI thread.
  42   email_ = chromeos::UserManager::Get()->GetLoggedInUser()->email();
  43
  44   image_data_.assign(input->GetBuffer(), input->GetSize());
  45   StartDecode(image_data_);
  46
  47   return true;
  48 }
  49
  50 void WallpaperSetWallpaperFunction::OnWallpaperDecoded(
  51     const gfx::ImageSkia& wallpaper) {
  52   chromeos::WallpaperManager* wallpaper_manager =
  53       chromeos::WallpaperManager::Get();
  54   chromeos::UserImage::RawImage raw_image(image_data_.begin(),
  55                                           image_data_.end());
  56   chromeos::UserImage image(wallpaper, raw_image);
  57   base::FilePath thumbnail_path = wallpaper_manager->GetCustomWallpaperPath(
  58       chromeos::kThumbnailWallpaperSubDir, email_, file_name_);
  59
  60   sequence_token_ = BrowserThread::GetBlockingPool()->
  61       GetNamedSequenceToken(chromeos::kWallpaperSequenceTokenName);
  62   scoped_refptr<base::SequencedTaskRunner> task_runner =
  63       BrowserThread::GetBlockingPool()->
  64           GetSequencedTaskRunnerWithShutdownBehavior(sequence_token_,
  65               base::SequencedWorkerPool::BLOCK_SHUTDOWN);
  66
  67   // In the new wallpaper picker UI, we do not depend on WallpaperDelegate
  68   // to refresh thumbnail. Uses a null delegate here.
  69   wallpaper_manager->SetCustomWallpaper(email_, file_name_, layout_,
  70                                         chromeos::User::CUSTOMIZED,
  71                                         image);
  72   unsafe_wallpaper_decoder_ = NULL;
  73
  74   if (generate_thumbnail_) {
  75     wallpaper.EnsureRepsForSupportedScaleFactors();
  76     scoped_ptr<gfx::ImageSkia> deep_copy(wallpaper.DeepCopy());
  77     // Generates thumbnail before call api function callback. We can then
  78     // request thumbnail in the javascript callback.
  79     task_runner->PostTask(FROM_HERE,
  80         base::Bind(
  81             &WallpaperSetWallpaperFunction::GenerateThumbnail,
  82             this, thumbnail_path, base::Passed(&deep_copy)));
  83   } else {
  84     SendResponse(true);
  85   }
  86 }
  87
  88 void WallpaperSetWallpaperFunction::GenerateThumbnail(
  89     const base::FilePath& thumbnail_path, scoped_ptr<gfx::ImageSkia> image) {
  90   DCHECK(BrowserThread::GetBlockingPool()->IsRunningSequenceOnCurrentThread(
  91       sequence_token_));
  92   chromeos::UserImage wallpaper(*image.get());
  93   if (!base::PathExists(thumbnail_path.DirName()))
  94     file_util::CreateDirectory(thumbnail_path.DirName());
  95
  96   scoped_refptr<base::RefCountedBytes> data;
  97   chromeos::WallpaperManager::Get()->ResizeWallpaper(
  98       wallpaper,
  99       ash::WALLPAPER_LAYOUT_STRETCH,
 100       ash::kWallpaperThumbnailWidth,
 101       ash::kWallpaperThumbnailHeight,
 102       &data);
 103   BrowserThread::PostTask(
 104       BrowserThread::UI, FROM_HERE,
 105       base::Bind(
 106           &WallpaperSetWallpaperFunction::ThumbnailGenerated,
 107           this, data));
 108 }
 109
 110 void WallpaperSetWallpaperFunction::ThumbnailGenerated(
 111     base::RefCountedBytes* data) {
 112   BinaryValue* result = BinaryValue::CreateWithCopiedBuffer(
 113       reinterpret_cast<const char*>(data->front()), data->size());
 114   SetResult(result);
 115   SendResponse(true);
 116 }